About the dependency graph
The dependency graph is a summary of the manifest and lock files stored in a repository and any dependencies that are submitted for the repository using the dependency submission API. For each repository, it shows:
- Dependencies, the ecosystems and packages it depends on
- Dependents, the repositories and packages that depend on it
For each dependency, you can see the license information and vulnerability severity. You can also search for a specific dependency using the search bar. Dependencies are sorted automatically by vulnerability severity.
When you push a commit to GitHub that changes or adds a supported manifest or lock file to the default branch, the dependency graph is automatically updated. In addition, the graph is updated when anyone pushes a change to the repository of one of your dependencies.
For information on the supported ecosystems and manifest files, see Dependency graph supported package ecosystems.
Additionally, you can use the dependency submission API to submit dependencies from the package manager or ecosystem of your choice, even if the ecosystem is not supported by dependency graph for manifest or lock file analysis. Dependencies submitted to a project using the dependency submission API will show which detector was used for their submission and when they were submitted. For more information on the dependency submission API, see Using the dependency submission API.
When you create a pull request containing changes to dependencies that targets the default branch, GitHub uses the dependency graph to add dependency reviews to the pull request. These indicate whether the dependencies contain vulnerabilities and, if so, the version of the dependency in which the vulnerability was fixed. For more information, see About dependency review.
If you have at least read access to the repository, you can export the dependency graph for the repository as an SPDX-compatible, Software Bill of Materials (SBOM), via the GitHub UI or GitHub REST API. For more information, see Exporting a software bill of materials for your repository.
Dependency graph availability
The dependency graph is automatically generated for all public repositories. You can choose to enable it for forks and for private repositories. For more information, see Managing security and analysis settings for your repository.
Repository administrators can also set up the dependency graph for private repositories. For more information, see Configuring the dependency graph.
Dependencies included
The dependency graph includes all the dependencies of a repository that are detailed in the manifest and lock files, or their equivalent, for supported ecosystems, as well as any dependencies that are submitted using the dependency submission API. This includes:
- Direct dependencies, that are explicitly defined in a manifest or lock file or have been submitted using the dependency submission API
- Indirect dependencies of these direct dependencies, also known as transitive dependencies or sub-dependencies
The dependency graph identifies indirect dependencies only if they are defined in a lock file or have been submitted using the dependency submission API. For the most reliable graph, you should use lock files (or their equivalent) because they define exactly which versions of the direct and indirect dependencies you currently use. If you use lock files, you also ensure that all contributors to the repository are using the same versions, which will make it easier for you to test and debug code. If your ecosystem does not have lock files, you can use pre-made actions that resolve transitive dependencies for many ecosystems. For more information, see Using the dependency submission API.
For more information on how GitHub helps you understand the dependencies in your environment, see About supply chain security.
Dependents included
For public repositories, only public repositories that depend on it or on packages that it publishes are reported. This information is not reported for private repositories.
Using the dependency graph
You can use the dependency graph to:
- Explore the repositories your code depends on, and those that depend on it. For more information, see Exploring the dependencies of a repository.
- View and update vulnerable dependencies for your repository. For more information, see About Dependabot alerts.
- See information about vulnerable dependencies in pull requests. For more information, see Reviewing dependency changes in a pull request.